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A typical circuit is the following:
For example:
1- Let us assume you need to drive the HW_SHUTDOWN* pad with a totem pole output of
a +3/5 V microcontroller (uP_OUT2):
NOTE:
In order to avoid a back powering effect it is recommended to avoid having any HIGH logic
level signal applied to the digital pins of the UE910 when the module is powered off or during
an ON/OFF transition.
In the following flow chart is detailed the proper restart procedure:
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